Booster Plug too rich?
I fitted a Booster Plug to my bike a few months ago, and a few happy thousand km with it; however I recently noticed a lot of black soot in the end of my exhausts, both sides. The bike runs fine with the BP, but I was concerned enough to take a look at the spark plugs and here is what I found...
Pics 1 & 2 are from the right cylinder
Pics 3 & 4 are from the left cylinder
Now, from my own experience in reading spark plugs, the electrodes and centre insulator look fine, but I'm concerned a little about the soot at the end of the threads.
What do you techies think?
And have any of you BP owners had excessive black soot in the rear of the exhaust?
I removed the BP, and cleaned out the rear exhaust end yesterday and went for a 20-30km ride. I immediately noticed the difference the BP made while fitted.
After the ride, just a little soot in the exhaust and slightly less on the plug than before.
I may ride to the dealer tomorrow and get him to check things out.
So whadda you guys think? Any help greatly appreciated.
PS, while on a weekend tour in June with a friend, engine hot, he's riding behind me; I open the throttle wide to overtake a car, and he noticed a big black cloud come out of the exhausts, albeit briefly.
Through the mud & the blood, to the green fields beyond...
British Army Veteran 1975-1984
Last edited by Mike the Bike; 09-23-2018 at 07:42 AM.